Curious, Just why in your opinion isn't it advisable? Just what is this actually based upon? Admitted I'd prefer a non tether jailbreak, but once you actually have your iPad set up the way you want it, how often does one actually turn it off? Most of the time, I find myself putting mine to sleep. Certainly I can't say that apps crash anymore often with iOS 4.3 than with 4.2.1
There seems to be a number of users who have not actually installed sn0wbreeze 2.3b4 that are recommending not installing it, often the very same users who suggest that a jailbreak can't actually hurt your device😕
I believe we each need to make our own choices, based on the best information we can obtain.